Scaffolding



G. W. FROST March 17,1936.

SCAFFOLDING Filed NOV. 27, 1935 INVENTOR. 9760?@ /r/"s ATTORNEY.

Patented Mar. 17, 1936 UNITED STATES PATENT OFFICE SCAFFOLDING Application November 27, 1935, Serial No. 51,762

2 Claims.

The object of my invention is to produce a lowcost but highly efficient and easily handled scaffolding unit which, by ready combination may be progressively combined, adjacent a building as the building progresses.

The accompanying drawing illustrates my in- Vention.

Fig, 1 is a perspective of an assembly of various elements of my structure;

Fig. 2 a fragmentary vertical section of my improved running-board supporting-bracket and adjacent standard;

Fig. 3 a perspective of my improved wall bracket for the support of the inner ends ci the running-board arms;

Fig. 4 a perspective of my improved runningvboard arm bracket;

Fig. 5 a perspective of the clamping L for securing guard rails to the standards;

Fig. 6 a vertical section of the adjustable footing for the standards, associated with a convenient extension element for the standards to be used when vertical adjustments exceeding the range of the footing element, are desirable; and

Fig. '7 a perspective of a clamp for rmly connecting overlapping ends of guard rails.

My improved unit comprises a rigid standard I of convenient length having a radial perforation I I near its upper end and additional perforations at convenient intervals if desired; a bracket I2 having a finger I3 insertable in the perforation I I and a pair of radiating arms I 4, I4 pivoted individually upon bracket I2 and swingable in a common horizontal plane.

Standard I0 is formed at its opposite ends for series association with similar standards and, therefore, is most conveniently made oi metal pipe having secured in one end a short section of smaller pipe I0 over which the open end of a similar standard may be sleeved and held rigidly laterally. 'I'he bracket I2 comprises a saddle-like main body formed so as to partially embrace the standard I0 in position to rmly hold the arms I5, I in a horizontal plane: against applied downward loads.

The outer free ends of arms I4, I4 are designed to be supported by any suitable means applied to a side wall of the building and for this purpose, I find it convenient to provide each arm near its free end with a psrforation I5 adapted to receive an upwardly projecting pin I6 carried by a bracket I'I upon which the free end of the arm may rest. Bracket I'I is provided with a series of diagonal notches I8 by which the bracket may be vertically adjustably hung upon one or more nails driven into the studs or side of the building with which, my scaffolding is to be associated. By this construction the bracket may be readily removed without pulling the nails although downward loads on the bracket tend to crowd it to a more secure anchorage.

By spreading the two arms more or less, the distance of the standard from the building may be adjusted.

In order that horizontal series of arms I4 of diierent vertical series of standards I0 may be approximately aligned for the reception of running boards (not shown), I provide a multiplicity of base elements B of well known form, each comprising an upstanding threaded pin upon which is threaded a collar upon which the lowermost standard I of a vertical series may rest, said collar conveniently being provided with a hub 2I adapted to rotatively lit within the lower open end of standard I0.

Standards I0 are conveniently pierced diametd rically at intermediate points in their length to receive the threaded arms of L-shaped guardrail holders 26 held in place by the nut 2l. The toe 23 of holder 26 is conveniently inturned as a sharpened tip 28 so that the guard rails 29 of varying vertical dimensions may be readily firmly mounted in place, as indicated in the drawing. Entry of toe 28 into the guard rails prevents slippage of said rails, both vertically and horizontally, and consequently the guard rails may be clamped firmly against standards and laterally brace them.

It will be noted that bracket I2, with its attached arms I4, I4 may be readily attached to and as readily detached from standard I0 even though several of such standards be associated in vertical series. This arrangement is quite desirable as it permits removal of any one of the arm pairs to free adjacent portions of the building to access without disturbing the scaffolding considered as a whole.

This saddle-like main body of bracket I2 partially embraces the standard so that rocking about an axis radial to the standard is prevented and the hook I3 retains the bracket against vertical movement, yet the bracket is readily detachable from and attachable to the standard Without tool manipulation. This construction contributes materially to speed the erection and dismemberment, as Well as to access to adjacent portions of the building.

There are situations where the range of adjustment of bases B is not suicient and therefore I provide tubular extension elements having a bore suii'icient to receive the standard elements lll and provided with a series of diametrical perforations 36 to receive a cross pin 31 upon which the telescope section I0 will rest. In order that element 35 may be readily associated with base B or with any one of elements I0, I secure Within one end a section of smaller pipe 38 which may sleeve over any one of pipes I0 or over the threaded pin of base B.

In order that comparatively short lengths of guard rails may be used Without seriously detracting from rigidity of the assembled scalold, I provide the U-shaped clamps 40, shown in Fig. '7, capable of embracing overlapping ends'of guardrail sections. The arms of the U are threaded to receive nuts 4| and 42 and a spanner 43, the arrangement being such that the overlapping ends of the guard rail sections may be rmly clamped together.

I claim as my invention:

1. A scaffolding unit comprising a standard formed at its opposite ends for series association with similar standards, a saddle-like bracket only partially embracing said standard and associable therewith to resist downward displacement but readily laterally separable therefrom without tool manipulation, said bracket being provided with a pair of horizontally extending arms each pivi otally attached to said bracket on an axis substantially parallel with the saddle axis.

2. A scaffolding unit comprising a standard formed at its opposite ends for series association with similar standards and having a radial perforation, and a saddle-like bracket only partially embracing said standard and provided with a nger projectable into said perforation to hold the bracket against downward and direct lateral displacement from the standard, said bracket being provided with a pair of horizontally extending arms each pivotally attached to said bracket on an axis substantially parallel with the saddle axis.

GEORGE W. FROST. 

